CoinMarketBook is described as 'Lists top cryptocurrencies based on the "Buy support / Market cap" ratio. Buy support is the sum of buy orders from top 20 exchanges. This is the actual amount that people want to buy' and is an website in the bitcoin & cryptocurrency category. There are more than 50 alternatives to CoinMarketBook, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Windows apps. The best CoinMarketBook alternative is CoinMarketCap, which is free. Other great sites and apps similar to CoinMarketBook are Blockchain Wallet, Coingecko, HODLings and Cesium.